Guys are always on about how girls aren't funny (which is a whole other conversation), but then they can get so angry when a girl doesn't laugh at their jokes. Women really can't win, if they don't laugh, it's not that the joke isn't clever. It's just that they 'simply don't get it,' or they 'have no sense of humor.' Or maybe she's just tired of you recycling the same four Family Guy references, Brad!